This clearance must be such that the decoupling sleeve is not under spring pressure causing wear. The more the disengaging clutch is loaded with the force of the Belleville spring, the less the friction force of the clutch drive disc becomes. Thus, there is a danger that slippage will appear.
If the gap is too large, normal clutch travel is not obtained. Then, when the pedal is depressed, complete disengagement is not carried out. The clutch assembly is designed in such a way that as the lining wears, the gap becomes smaller. As the clutch drive plate wears out and becomes thinner, the pressure plate moves closer to the flywheel surface. The thrust disc approaches the release bearing (muff). If the clutch rests against the release lever without any play, the disc spring of the pressure plate rests on the thrust plate towards the release clutch. Instead of pushing the drive disc towards the friction surface, the spring is unloaded. the friction force decreases, slippage of the clutch appears. The amount of clearance determines the free travel of the clutch pedal.
Clutch pedal free play measurement
Hold a ruler near the clutch pedal.
Press the pedal with your hand until there is more resistance.
When changing from the neutral position, the travel should be 15-25 mm.
If the pedal free play is not correct, the length of the clutch rod should be adjusted.
Clutch pedal free play adjustment
The cable sheath rests on the gearbox support.
Loosen the nut at the top, near the tip (see fig.).
Loosen the lock nut to adjust the clutch pedal free play (2). Then turn the adjusting nut (3), while holding the rod (1)
While holding the tip, turn the clutch rod adjusting nut. Turning counterclockwise makes the gap larger, turning it clockwise makes it smaller.
Measure the pedal free play, then tighten the fixing nut securely again.
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